EP 1895728 A1 20080305 - Equalizing structure and equalizing method
Title (en)
Equalizing structure and equalizing method
Title (de)
Entzerrervorrichtung und Verfahren zur Entzerrung
Title (fr)
Dispositif d'égalisation et procédé d'égalisation
Publication
Application
Priority
EP 06017929 A 20060828
Abstract (en)
The present invention comprises an equalizing structure (10) for a receiving device of a wireless communication system, in which two or more transmit signals transmitted in parallel from one or more transmitters are received in receive signal vectors representing two or more receive data streams, said signals comprising information modulated onto carrier signals according to a modulation scheme, wherein all possible transmit signals are represented by candidate constellation values in the signal constellation of said modulation scheme, comprising, a selector (14) adapted to select one of the two or more transmit signals, an estimator (15) adapted to calculate, for at least some candidate constellation values for the selected transmit signal, an estimate constellation value for the non selected one(s) of said transmit signal(s) by interference cancellation calculation in order to obtain candidate signal vectors for each of said at least some candidate constellation values, each candidate signal vector comprising one of said at least some candidate constellation values for the selected transmit signal and the estimate constellation value for the corresponding non selected one(s) of said transmit signal(s), wherein channel estimation values used in the interference cancellation calculation are only updated in case that new channel estimation values are obtained, and a maximum likelihood detector (16) adapted to detect one of said candidate signal vectors having a minimum Euclidean distance to a respective receive signal vector as a most likely transmit signal vector. The invention further comprises a corresponding equalizing method and a computer program performing said method.
IPC 8 full level
H04L 25/03 (2006.01)
CPC (source: EP US)
H04L 25/03191 (2013.01 - EP US); H04L 25/03292 (2013.01 - EP US); H04L 25/03305 (2013.01 - EP US); H04L 25/03318 (2013.01 - EP US); H04L 25/03331 (2013.01 - EP US); H04L 25/0204 (2013.01 - EP US); H04L 27/2647 (2013.01 - EP US); H04L 2025/03426 (2013.01 - EP US)
Citation (applicant)
- US 2005018789 A1 20050127 - JIA MING [CA], et al
- Z. LEY; Y. DAI; S. SUN: "Near Optimal List MIMO Detection", IEEE PIMRC 2005 CONFERENCE, 11 September 2005 (2005-09-11)
Citation (search report)
- [A] US 2005018789 A1 20050127 - JIA MING [CA], et al
- [A] WO 9812848 A1 19980326 - ERICSSON GE MOBILE INC [US]
- [A] WO 9626578 A1 19960829 - ERICSSON GE MOBILE INC [US]
- [A] MAGARINI M ET AL: "A suboptimal detection scheme for MIMO systems with non-binary constellations", PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, 2004. PIMRC 2004. 15TH IEEE INTERNATIONAL SYMPOSIUM ON BARCELONA, SPAIN 5-8 SEPT. 2004, PISCATAWAY, NJ, USA,IEEE, vol. 3, 5 September 2004 (2004-09-05), pages 1579 - 1582, XP010754207, ISBN: 0-7803-8523-3
Citation (examination)
- WINPASSINGER ET AL: "From lattice-reduction-aided detection towards maximum-likelihood detection in MIMO systems", INTERNET CITATION, July 2003 (2003-07-01), XP002433912, Retrieved from the Internet <URL:http://www.lnt.de/LIT/papers/WOC03.pdf> [retrieved on 20070516]
- ZHONGDING LEI ET AL: "Near Optimal List MIMO Detection", PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, 2005. PIMRC 2005. IE EE 16TH INTERNATIONAL SYMPOSIUM ON BERLIN, GERMANY 11-14 SEPT. 2005, PISCATAWAY, NJ, USA,IEEE, vol. 4, 11 September 2005 (2005-09-11), pages 2441 - 2446, XP010928129, ISBN: 978-978-38007-2-4, DOI: 10.1109/PIMRC.2005.1651881
Designated contracting state (EPC)
DE FR GB
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
EP 1895728 A1 20080305; CN 101512997 A 20090819; JP 2010502141 A 20100121; JP 5053378 B2 20121017; US 2009323795 A1 20091231; US 8155248 B2 20120410; WO 2008025397 A1 20080306
DOCDB simple family (application)
EP 06017929 A 20060828; CN 200780032040 A 20070703; EP 2007005888 W 20070703; JP 2009525934 A 20070703; US 37584407 A 20070703